<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Login</title>
</head>
<body>
<h1>用户登录</h1>
<form action="authentication/form" method="post">
    username: <input name="username"/><br>
    Password: <input name="password"/><br>
    <button>提交</button>
</form>
</body>
</html>